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Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidated Statements Of Comprehensive Income [Abstract]
Net unrealized (depreciation) appreciation on securities available for sale, tax	$ 247	$ 196	$ 6,195	$ (5,790)
Reclassification adjustment for net gains related to securities available for sale included in net income, tax	28	47	226	224
Other-than-temporary impairment adjustment, tax	0	25	0	82
Non-credit portion of other-than-temporary impairment losses, tax			0	18
Amortization of actuarial gain for supplemental executive retirement plan, tax			0	(56)
Net unrealized appreciation on interest rate derivatives, tax	58	0	83	0
Actuarial loss (gain) on supplemental executive retirement plan, net of related tax	$ 3	$ 4	$ 7	$ 15

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Non-Credit Portion Of Other Than Temporary Impairment Losses, Tax

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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.

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Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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